Except that it is a far more complicated explanation than simply accepting that the unsanitary conditions at the wet market with multiple species of wild animals in close proximity to people neatly explains all the evidence.
This isn't any critique of this particular comment, but I feel like you are ignoring the known dynamics of Sars-cov-2. R_0 is dependent on population density around the person infected. An infected person walking down the street for miles amounts to very little R_0, until they enter a crowded sphere.
Also, are you aware that there already have been lab leaks of similar nature [0]? Whether they go on to mature into a pandemic is a matter of state handling. You seem to dismiss the mechanism entirely just because it hasn't ever spread past a certain point.
